package com.syq.service;


import com.syq.pojo.User;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * @author zhaojian
 */
@Service
@Transactional
public class UserServiceImpl implements UserService {

    /**
     * 查询所有用户对象
     * @return
     */
    @Override
    public List<User> queryUsers() {
        System.out.println("queryUser");//核心代码
        return new ArrayList<>();
    }
    
    @Override
    public Integer updateUser(User user) {
//        System.out.println("事务控制");
//        System.out.println("日志打印");
        System.out.println("update User");
        if(1==1) {
            throw new NullPointerException("test 空指针");
        }
        return 1;
    }

    @Override
    public Integer saveUser(User user) {
//        System.out.println("事务控制");
//        System.out.println("日志打印");
        System.out.println("Save User");
        return 1;
    }

    @Override
    public Integer deleteUser(Integer id) {
//        System.out.println("事务控制");
//        System.out.println("日志打印");
        System.out.println("delete User");
        return 1;
    }
}